Am I missing something here? Elastic says this is a free sw, which you can install and use, but if you want someone else to manage the hosting, we are practical

Am I missing something here? Elastic says this is a free sw, which you can install and use, but if you want someone else to manage the hosting, we are practically the only option. How did that became an 'ethical position' ? If I am OSS dev, why should I contribute to them vs OpenSearch?